/* 制作轮播图左右的箭头 */
.carousel .center .arrow {
  width: 32px;
  height: 44px;
  position: absolute;
  top: 50%;
  margin-top: -22px;
  opacity: 0.6;
}

.carousel .center .arrow:hover {
  opacity: 1;
}

.carousel .center .arrow.left {
  background: url(images/sprite.png) no-repeat -4px -3px;
  left: -42px;
}

.carousel .center .arrow.right {
  background: url(images/sprite.png) no-repeat -4px -49px;
  right: -42px;
}